LightShaftRendering.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
 
#include "Math/Color.h"
#include "Math/Vector2D.h"
 
class FViewInfo;
class FLightSceneInfo;
class FLightSceneProxy;
class FSceneViewFamily;
 
struct FMobileLightShaftInfo
{
    FVector2D Center = FVector2D::ZeroVector;
    FLinearColor ColorMask = FLinearColor::Transparent;
    FLinearColor ColorApply = FLinearColor::Transparent;
    float BloomMaxBrightness = 100.0f;
};
 
// Returns mobile light shaft info for the light.
extern FMobileLightShaftInfo GetMobileLightShaftInfo(const FViewInfo& View, const FLightSceneInfo& LightSceneInfo);
 
// Returns whether light shafts globally are enabled.
extern bool ShouldRenderLightShafts(const FSceneViewFamily& ViewFamily);
 
// Returns whether the light proxy is eligible for light shaft rendering. Assumes light shafts are enabled.
extern bool ShouldRenderLightShaftsForLight(const FViewInfo& View, const FLightSceneProxy& LightSceneProxy);
 
// Returns the current downsample factor for the light shaft render target.
extern int32 GetLightShaftDownsampleFactor();